Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

LCD device and driving method of its backlight module

A liquid crystal display device and backlight module technology, which is applied in optics, nonlinear optics, static indicators, etc., can solve the problems of reducing screen brightness, changing color temperature, affecting the display quality of liquid crystal display devices, and the user's viewing comfort of the screen. The effect of increasing cost, increasing visual comfort, and improving overall quality

Inactive Publication Date: 2008-07-16
AU OPTRONICS CORP
View PDF0 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, using the black insertion technology that inserts low gray scale or full black screen will reduce the brightness of the screen display, and the deviation of gray scale will lead to the change of color temperature
When the liquid crystal display device is switched from the general display mode to the display mode using the black insertion technology, or when switching from the display mode using the black insertion technology to the general display mode, the user will obviously feel the change of the screen brightness and color temperature, so Will greatly affect the display quality of the liquid crystal display device and the comfort of the user watching the screen

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • LCD device and driving method of its backlight module
  • LCD device and driving method of its backlight module
  • LCD device and driving method of its backlight module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] According to a preferred embodiment of the driving method of the liquid crystal display device and its backlight module of the present invention, at least one first light source is driven when the liquid crystal display device is in the normal display mode, and the aforementioned The first light source and at least one second light source. The first light source and the second light source have different color temperatures, so that the backlight module provides backlights with different color temperatures and brightnesses to the display panel in different display modes, so that the liquid crystal display device has substantially different color temperatures in the normal display mode and black insertion display mode. The same display color temperature and display brightness.

[0028] A preferred embodiment will be proposed below as a detailed description of the present invention, but this embodiment is only used as an example for illustration, and does not limit the sco...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an LCD device and a driving method of a backlight module thereof. The LCD device comprises a display panel and the backlight module, wherein, the backlight module comprises a first light source, a second light source and a drive circuit. When the LCD device is in a normal display mode, the drive circuit drives the first light source to make the backlight module to provide a first backlight to the display panel. When the LCD device is converted into a black frame insertion display mode, the drive circuit drives the first light source and the second drive circuit at the same time to make the backlight module to provide a mixed backlight to the display panel. The color temperature and lightness of the mixed backlight are different from the color temperature and the brightness of the first backlight, so that the displayed color temperature and displayed brightness of the LCD device under the black frame insertion display mode is essentially the same as the displayed color temperature and displayed brightness of the LCD under the normal display mode.

Description

technical field [0001] The invention relates to a liquid crystal display device and a driving method of a backlight module thereof. Background technique [0002] With the advancement of flat panel display technology, thinner display devices, such as LCD TVs and LCD screens, have gradually entered people's daily life. Due to factors such as improved image quality and lower prices, more and more consumers choose liquid crystal displays as display devices for personal computers. In response to various demands from consumers, the industry has been striving to develop liquid crystal displays with wider viewing angles, wider color gamut and shorter response time. [0003] Response time refers to the response speed of the liquid crystal display to the input signal, that is, the reaction time for the liquid crystal to turn from dark to bright, or from bright to dark. With the development of technology, the response time of LCDs has been gradually shortened from 20 milliseconds in ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36G09G3/34G02F1/133G02F1/13357G02F1/1335
Inventor 刘勇鑫蔡永生刘得志蔡淑慧
Owner AU OPTRONICS CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products